Zobrazeno 1 - 10 of 50 pro vyhledávání: '"K E Barrett"'
1
Multilinear Jacobians for isoparametric planar elements
Autor: K. E. Barrett
Publikováno v: Finite Elements in Analysis and Design. 40:821-853
A systematic procedure is developed for analysing the Jacobians of planar finite elements. Conditions are derived for the Jacobians to be linear or multilinear in the two isoparametric coordinates. For the case of the 6-noded triangle a complete geom
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6ee5de275c6f370fe9c817795f70df6a
https://doi.org/10.1016/s0168-874x(03)00116-1
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2
2-D finite element analysis of a compressible dynamic viscoelastic cylinder using FFT
Autor: K. E. Barrett, A. C. Gotts
Publikováno v: Communications in Numerical Methods in Engineering. 18:729-742
An extension to a two-dimensional compressible dynamic viscoelastic cylinder problem using the finite element method in the Laplace domain coupled with fast Fourier transform is performed. The governing viscoelastic equations of motion are transforme
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4ac4e032a3873db1f42ddb62f39cd27c
https://doi.org/10.1002/cnm.533
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3
Duct flow with a transverse magnetic field at high Hartmann numbers
Autor: K. E. Barrett
Publikováno v: International Journal for Numerical Methods in Engineering. 50:1893-1906
Finite element methods can be used for determining the flow in a straight channel under a variety of wall conductivity conditions when a uniform magnetic field is imposed perpendicular to the flow direction. At high Hartmann numbers oscillatory solut
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fea58ea20bb852d4ae195ed7388eabc1
https://doi.org/10.1002/nme.101
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4
Symbolic computation of stiffness matrices for quadratic triangular elements
Autor: K. E. Barrett
Publikováno v: Communications in Numerical Methods in Engineering. 15:413-421
Conditions under which it is possible to determine exact integrals for stiffness matrix entries for a 6-noded isoparametric plane strain element have been investigated. Considerable use has been made of the algebraic manipulation language MAPLE in ob
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d9b348b4f1bf84ee750be9b2c6b7d0b1
https://doi.org/10.1002/(sici)1099-0887(199906/07)15:6<413::aid-cnm255>3.0.co
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5
Degenerate polynomial forms
Autor: K. E. Barrett
Publikováno v: Communications in Numerical Methods in Engineering. 15:305-308
It is well known that the condition under which a quadratic in two variables reduces to a product of two linear factors is that the determinant of the associated quadratic form should be zero. This result is generalized to the case of a polynomial of
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::64731bb2b527261e61a35ab2484f48af
https://doi.org/10.1002/(sici)1099-0887(199905)15:5<305::aid-cnm243>3.0.co
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6
Explicit eight-noded quadrilateral elements
Autor: K. E. Barrett
Publikováno v: Finite Elements in Analysis and Design. 31:209-222
Conditions under which it is possible to determine exact integrals for stiffness matrix entries for an eight-noded isoparametric plane strain element are investigated. Considerable use has been made of the algebraic manipulation language MAPLE in obt
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::285d1e77ff1692d9a8a2dbb2f54d9d9a
https://doi.org/10.1016/s0168-874x(98)00067-5
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7
Jacobians for isoparametric finite elements
Autor: K. E. Barrett
Publikováno v: Communications in Numerical Methods in Engineering. 12:755-766
Isoparametric elements are only valid if the Jacobian determinant of the transformation between a given element and a master element does not change sign within or on the element boundary. Some algorithms are known which analyse Jacobians for various
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d160b4dd6eca22076dc3472053fbb774
https://doi.org/10.1002/(sici)1099-0887(199611)12:11<755::aid-cnm15>3.0.co
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9
Inhibition of human peripheral blood lymphocyte function by protoporphyrin and longwave ultraviolet light
Autor: K E Barrett, A Yen, T D Bigby, D Montisano, I Gigli
Publikováno v: The Journal of Immunology. 153:3286-3294
Modulation of immunologic effector cells by exogenous photoactive substances has been advanced as an underlying mechanism for the efficacy of various photochemotherapeutic regimens. It is also possible that endogenous photosensitizers, such as protop
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::34e9a90c6c03132f468c2fc247d5d14e
https://doi.org/10.4049/jimmunol.153.7.3286
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10
Pseudo-recursive FORTRAN
Autor: R. J. Tiddy, K. E. Barrett
Publikováno v: Advances in Engineering Software. 21:17-20
This note describes a simple construction for implementing recursion within FORTRAN77. A range of code has been tested with a few popular PC and workstation compilers. Attention is drawn to a source checking program FTNCHEK.
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https://doi.org/10.1016/0965-9978(94)90070-1
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